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Investigation of low-grade and complex ores in Colorado

Published Year

• 1920-1929 (1)

Subject

• Ore deposits--Colorado (1)
• Ores (1)
• Ores--Colorado (1)
• Ores--Sampling and estimation (1) *

Author

• Coghill, Will H. (1)
• Hornor, R. R. (1) *

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